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My model should be symmetric but the bearing reactions reflect unbalanced loading or modeling, what can I do?

Answer

Please check the orientations of all bearings, rods and surfaces and the associated orientation of the loads. The display of the respective coordinate systems via the pointing navigator (Fig. 01).

If this does not solve the problem, first use a simple load case where the deformation is easy to understand. Refer to internal forces and deformations to detect possible twists or missing connections (Fig. 02). To detect distorted loads on surfaces, you can also use the Load Balancing option in the results (Fig. 03)

Not infrequently, a supposed connection between a surface and a rod does not exist. Here the FE network can also show if a connection has been established (Fig. 04).

If this also leaves the imbalance, use a copy of the model and erase successive elements to find the missing symmetry.

If all this fails, then please send us the model to our hotline with a note of which tests you have already performed.

Keywords

Symmetrical unbalanced

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RFEM Main Program
RFEM 5.xx

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Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

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